Question 1

How do I size an industrial air compressor?

Accepted Answer

Size a compressor by the total CFM (cubic feet per minute) your tools and equipment require at their operating PSI, then add roughly 30% headroom for future growth and to avoid running the unit at 100% duty. Add the CFM of every tool that may run simultaneously, match the required pressure (most shop applications run 90-125 PSI), and confirm your available electrical supply (voltage and phase). A1 Compressor Warehouse offers free sizing support to match the right compressor to your application.

Question 2

What is the difference between oil-free and oil-lubricated air compressors?

Accepted Answer

Oil-lubricated compressors use oil to lubricate and seal the compression element, offering long life and lower cost for general industrial use, but they require oil changes and can carry trace oil into the air. Oil-free compressors deliver Class 0 air with no oil in the airstream, which is essential for medical, dental, food, electronics, and pharmaceutical applications where any oil contamination is unacceptable. Anest Iwata oil-free scroll compressors are a common choice for these clean-air needs.

Question 3

What size air compressor do I need for air tools?

Accepted Answer

Check the CFM requirement for each air tool and add the CFM of all tools that will run at once, then add about 30% headroom. Light tools like impact wrenches need 3-5 CFM, while continuous-demand tools like sanders or grinders can need 8-12 CFM or more. For most professional shops a two-stage compressor in the 5-10 HP range covers a single-bay operation; larger shops and production lines typically move to rotary screw compressors for continuous duty.

Question 4

Is A1 Compressor Warehouse an authorized dealer?

Accepted Answer

Yes. A1 Compressor Warehouse is an authorized dealer for Atlas Copco, Anest Iwata, Mattei, Schulz, and EL-AV. Every product ships with genuine OEM parts and full manufacturer warranty. We serve customers nationwide with fast US shipping and provide service in the Carolinas.

Question 5

What is the difference between a rotary screw and a reciprocating air compressor?

Accepted Answer

Reciprocating (piston) compressors are ideal for intermittent use and lower-duty applications, delivering high pressure at a lower upfront cost. Rotary screw compressors are built for continuous duty, running cooler and quieter with steadier air delivery, which makes them the standard for shops and plants that use air throughout the day. Variable-speed (VSD) rotary screw models further cut energy costs by matching output to demand.

Question 6

Do air compressors come with a warranty and shipping?

Accepted Answer

Yes. All compressors sold by A1 Compressor Warehouse include the full manufacturer warranty and genuine OEM parts. We ship nationwide across the United States, offer same-day quotes, and provide expert sizing support to help you select the right unit before you buy.

Shipping Weight	500.0 lb
Vendor	Anest Iwata
Product Type	Oil-Free Air Compressor

Brand	Anest Iwata
Model #	OFT-30DHH
Mfr Part #	OFT-30DHH
Horsepower	30 HP
CFM	94
Max Pressure	145 PSI
Tank Size	240 gallon horizontal (duplex pumps)
Voltage	230V / 460V
Phase	Three-Phase
Duty Cycle	100% Continuous
Noise	78 dB(A)
Weight	1980 lbs
Dimensions	96" x 42" x 64"
Warranty	2-year standard manufacturer warranty
Country of Origin	Japan

Anest Iwata OFT-30DHH-240 Oil Less Reciprocating Compressor

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